Transcript The Circulatory System

The Circulatory
System
A Bloody Situation
The Case of the Missing Jewels
Late one April night, government agents
received an anonymous tip that the National
Art Museum was about to be robbed of its
priceless jewel collection! When they
arrived a the museum, they saw they were
too late: the jewels were gone.
There was no one around, but there was
evidence of a struggle. Blood was spattered
all over a nearby wall. In another area,
there was a smeared pool of blood. Hidden
in the corner, investigators found a bloody
knife.
Your Mission
You and your partner are
investigators on the scene. Your job is
to identify the blood and narrow down
the suspects. Based on what you know
about blood, come up with at least 3
forensic questions that could be
answered by analyzing the blood.
Human Blood
Major Components:
1) Plasma
2) White Blood Cells
3) Red Blood Cells
4) Platelets
BRAINPOP
Suspended Materials
•
•
•
•
•
•
Dissolved gases (CO2)
Salt
Glucose
Amino acids
Hormones
Urea (wastes)
RED
Blood
Cells
•Bi-concave shape &
no nucleus
•Smaller than WBC
•5 million per ml (most
numerous!)
•Produced in bone
marrow
•Live for 120 days
•Contains
hemoglobin
which carries
oxygen! (forms
oxyhemoglobin)
•Responsible for
blood type
WHITE •Fewest in number
BLOOD •Produced in bone
CELLS marrow
•Have a nucleus
•Largest
•Most only live for a
few days
•The “army”
of the
circulatory
system
•Fights
foreign
invaders
(infection,
viruses,
allergens,
bacteria)
•Very small
Platelets •Fragments of WBCs
•Needed for
blood clotting
•Releases
•Not as many as RBCs
clotting factors
and forms fibrin
Blood Types
As blood flows through the circulatory system, it
moves through three types of blood vessels
1- arteries
2- capillaries
3- veins
BRAINPOP
• smallest
most muscular • carries blood
back TO the
blood vessels
heart from the
•Must withstand powerful body
pressure produced when
•VEINS have
the heart contracts
VALVES to
•Carries blood AWAY from prevent backflow
heart
of blood!
• thickest,
(only one
cell thick!)
•Connects arteries to
veins
•Sites where gases,
nutrients and wastes
are exchanged
(diffuse into/out of
blood)
THE BLOODMOBILE!!!
• Blood carries oxygen and nutrients away
from the heart toward the body tissues!
• Blood carries carbon dioxide and wastes
back to the heart to be pumped to the
lungs!
Let’s Review Blood Vessels!
Artery
Capillary
Vein
The Heart
• Large organ composed of thick muscle
• 4 chambers
– 2 atria (top)
– 2 ventricles (bottom)
• Circulatory
system YouTube
1. AORTA (largest artery
– pumps oxygenated
blood to body tissues)
2. PULMONARY ARTERY
(pumps deoxygenated
blood to lungs)
13. Pulmonary Artery
(“Pulmonary =Lungs”)
12. Superior Vena Cava
11. Right Atrium (pumps
deoxygenated blood
into right ventricle)
3. PULMONARY VEINS
(pumps oxygenated blood
from lungs to left atrium)
4. Left Atrium (pumps
oxygen rich blood to
left ventricle
6. Left Ventricle (pumps
oxygenated blood into
aorta)
10. Inferior Vena Cava (carries
deoxygenated blood from
body to right atrium)
9 & 5. Valves (prevents
backflow of blood)
8. Right Ventricle (pumps
deoxygenated blood into
Pulmonary Artery)
AORTA
7. Septum (divides the 2 sides of
heart (prevents mixing of blood)
Types of Circulation
– the heart functions as 2 separate pumps
– Pulmonary Circulation: the right side of the
heart pumping blood to the lungs where
oxygen is absorbed and carbon dioxide is
released
– Systemic Circulation: the left side of the heart
pumps oxygen-rich blood that is returning
from the lungs, away from the heart to the rest
of the body
– Coronary Circulation: the movement of blood
through the vessels serving the heart muscle
Homework
Disorders of the circulatory system
#1 Healthy or unhealthy?
Disease?
#2 Healthy or Unhealthy?
Disease?
#3 Healthy or Unhealthy?
Disease?
#4 Healthy or Unhealthy?
Disease?
Hypertension
Description
Causes
Treatment/Prevention
Heart Attack movie
What is ANGIOPLASTY and STENTING? YouTube
• Description
• Causes
• Treatment/Prevention
Stroke
• Description
• Causes
• Treatment/Prevention
Leukemia
• Description
• Causes
• Treatment/Prevention
Sickle Cell Anemia
• Description
• Causes
• Treatment/Prevention
Iron-Deficiency Anemia
• Description
• Causes
• Treatment/Prevention
Hemophilia
• Description
• Causes
• Treatment/Prevention